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level: Level 1

Questions and Answers List

level questions: Level 1

QuestionAnswer
each link or step in a food chain that describes energy consumptiontrophic levels
all living things inhabiting the earthbiotic factors
the nonliving parts of an environmentabiotic factors
individual living thing (most specific, 1)organism
sum of all ecosystems on earth (most broad, 6)biosphere
group of the same species (2)population
all populations in the same area (3)community
community and its environment's abiotic factors (4)ecosystem
large geographical areas with distinct plants, animals, climate, and terrain (5)biome
what biome is virginia intemperate deciduous forest
the variety observed within an environment including organisms and genes; a lot in forests & wetlandsbiodiversity
wetlands formed when rivers meet the sea containing a brackish mixture of freshwater & saltwaterestuaries
largest estuary in the u.s.chesapeake bay watershed
first reason biodiversity is importantmedicine, wood, clothing, rubber, adhesives
second reason biodiversity is importantwarn us of toxins in environment
third reason biodiversity is importantinspiration for engineering and technology
fourth reason biodiversity is importantmaintain atmosphere by adding oxygen and removing carbon dioxide
fifth reason biodiversity is importantprevent soil erosion
sixth reason biodiversity is importantpurify water and cycle nutrients
seventh reason biodiversity is importantpollination
eighth reason biodiversity is importantprey needs predators
causes for species extinctionoverpopulation, pollution, invasive species, habitat loss, climate change
main reason for loss of biodiversityoverpopulation
why does the human population keep growingresources and technology
max population size that can be supported based on food, water and land resourcescarrying capacity
how much of earth's water is accessible freshwater1%
which is safer: tap water or bottled watertap water
destruction of vegetation increases fertilizer runoff into water resulting in algal blooms that take oxygen from organisms creating dead zoneseutrophication
which type of animals are impacted the most by noise pollutionmarine
species from other areas that were introduced to an environment they don’t belong to by humansinvasive species
model that shows how energy and biomass is transferred throughout an ecosystemfood chain
amount of matter comprising a group of organismsbiomass
each link or step in a food chain that describes energy consumptiontrophic levels
as you move up a food chain what happens to the energy and biomassdecreases
shows all possible feeding relationships in a communityfood web
predator or prey that exhibits the highest number of interactionskeystone species
interspecies interactionsymbiosis
parasite benefits while the host is harmedparasitism
both species benefitmutualism
one species benefits while the other is neither harmed nor helpedcommensalism
behaving in a way that increases another’s survival while decreasing one’s own survivalaltruism
the role or function a species plays in its environmentniche
a gradual sequence of events in which more and more species come together to form a brand new communitysuccession
pioneer organisms colonize new sites on bare rock that forms when glaciers melt or volcanic lava cools and hardensprimary succession
occurs on new soil due to a natural disaster or human disturbancesecondary succession
when a stable, mature community is achieved and succession no longer occursclimax community
pattern of how a population is spread out across its habitatdispersion
due to social behavior, defense or grouped resourcesclumped
due to territorial behavioruniform
non-territorialrandom
what affects population growthpopulation density and limiting factors
formula for population densitynumber of individuals/area squared
anything that causes a decrease in populationlimiting factors
disease & competition cause more deaths because the density is higherdensity-dependent
human disturbances or natural disasters that randomly decrease population no matter the sizedensity-independent
rapid, continual population increase due to unlimited resourcesexponential growth
exponential that slows forming an s shaped graph because of the carrying capacitylogistic growth